three track days since install (no street miles) and all is well.
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Power steering pump compatibility
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I know the PS pulley on the S54 positioned further forward than the M54. I'd bet that the bracket is the only difference and the pump is the same.
I tried no PS at one point. I think the belt is from an 09 Mazda 3. I'll have to search for the part number.
Last edited by bigjae46; 09-03-2022, 09:57 AM.
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I really want to believe the M54 and S54 pumps are the same minus the bracket, but I just don't see that considering the price delta. I wonder if there is some difference in the internal design or pressure relief valve?
I'm replacing an S54 pump soon, I'll crack it open along with an M54 and take some pics.'09 HP2S, '12 R12GSA, '00 Black 323iT, '02 Alpine 325iT (Track Wagon), '02 Alpine 330iT
Instagram @HillPerformanceBimmers
Email to George@HillPerformance.com
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Originally posted by George Hill View PostI really want to believe the M54 and S54 pumps are the same minus the bracket, but I just don't see that considering the price delta. I wonder if there is some difference in the internal design or pressure relief valve?
I'm replacing an S54 pump soon, I'll crack it open along with an M54 and take some pics.
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Originally posted by George Hill View PostI really want to believe the M54 and S54 pumps are the same minus the bracket, but I just don't see that considering the price delta. I wonder if there is some difference in the internal design or pressure relief valve?
I'm replacing an S54 pump soon, I'll crack it open along with an M54 and take some pics.
Side note, I run an MR2 power steering pump in my track car (Honda). Not having to deal with an extra belt (Hondas run a separate belt for the PS pump) and can turn it on and off by a switch. You can also adjust the pump output, so you can get more or less PS effect. It's a fantastic setup. The Mercedes above works similarly. Volvo also makes a pump setup that is popular in the aftermarket and can be controlled via CAN.
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Originally posted by SQ13 View PostAre the Bosch units fine, or is this one of those parts that needs to be OE?Last edited by MathewM3; 09-07-2022, 02:14 PM.
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Originally posted by MathewM3 View Post
My OEM lasted 96K miles with making a noise for the last 5K. I used a Meyle from Pelican parts. My cousin in Germanyhas various used an aftermarket pump without any issues. I will check what brand he went with and let you know.
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Originally posted by SQ13 View PostAre the Bosch units fine, or is this one of those parts that needs to be OE?
He used ZF , I think they are the oem manufacturer. Part number 32412229679.
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Haven't installed yet but I ordered an X5 pump (32416757914) from schmiedmann since my pump was starting to whine when hot. Opted for the Meyle one since it seemed the best cost while still being an OE manufacturer just not for this part. Schmiedmann do have a 'trucktec' brand made pump for $100 but I've never heard of them and a quick search makes it sound like they are a low quality re-supplier. Either way $130 for a brand new meyle PS pump feels like pretty good value.
As above, appears to be identical to the original pump.
I'm tempted to open it up and have a look as well as compare the pressure regulators for science but I don't really want to disturb it with it being brand new and all.
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Originally posted by George Hill View PostI really want to believe the M54 and S54 pumps are the same minus the bracket, but I just don't see that considering the price delta. I wonder if there is some difference in the internal design or pressure relief valve?
I'm replacing an S54 pump soon, I'll crack it open along with an M54 and take some pics.
You’re our last hope, obi-wan.
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Originally posted by tlow98 View Post
george I know you’re a busy guy, but did you ever figure this one out?
You’re our last hope, obi-wan.
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Originally posted by tlow98 View Post
george I know you’re a busy guy, but did you ever figure this one out?
You’re our last hope, obi-wan.
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